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What's the difference between comma separated joins and join on syntax in MySQL? [duplicate]
For example if I were to have a table "Person" with a column "id" that references a column "id" in table "Worker"
5 Answers...
Find first element by predicate
...ow() (for a more meaningful error instead of a NSEE) as you might not know if the operations applied to the stream pipeline will result in an element.
– Alexis C.
Feb 24 '16 at 17:22
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Output first 100 characters in a string
...; print len(greek)
25
>>> print greek[:10]
αβγδεζηθικ
If you want to run the above code as a script, put this line at the top
# -*- coding: utf-8 -*-
If your editor doesn't save in utf-8, substitute the correct encoding
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Replace whole line containing a string using Sed
...U sed does not require the space; it works just fine as originally posted. If your particular sed requires the space, then by all means note which sed is incompatible and add the necessary invocation as a comment. However, please don't change working code in an accepted answer.
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Read the package name of an Android APK
...Android APK. I have tried to unzip the APK and read contents of AndroidManifest.xml , but seems it's not a text file.
23 A...
Why does Java switch on contiguous ints appear to run faster with added cases?
...ch table is transformed into what looks like a lookupswitch (similar to an if/else if structure).
Decompiling the assembly generated by the JIT (hotspot JDK 1.7) shows that it uses a succession of if/else if when there are 17 cases or less, an array of pointers when there are more than 18 (more eff...
What's the difference between belongs_to and has_one?
What is the difference between a belongs_to and a has_one ?
5 Answers
5
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Reading my own Jar's Manifest
I need to read the Manifest file, which delivered my class, but when I use:
12 Answers
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Java Error opening registry key
...y java.exe, javaw.exe and javaws.exe from your Windows\System32 folder and if you have an x64 system (Win 7 64 bits) also do the same under Windows\SysWOW64.
If you can't find them at these locations, try deleting them from C:\ProgramData\Oracle\Java\javapath.
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How to convert String to Long in Kotlin?
...a [Long] number and returns the result.
@throws NumberFormatException if the string is not a valid
representation of a number.
2. string.toLongOrNull()
Parses the string as a [Long] number and returns the result or null
if the string is not a valid representation of a number.
3. str...